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Finding the Third Proportional to 74,430 and 106,110

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Solution

The third proportional to 74,430 and 106,110 is: 151,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,430 : 106,110 = 106,110 : x
  2. Step 2: Convert to fraction form
    74,430/106,110 = 106,110/x
  3. Step 3: Cross multiply
    74,430x = 106,110 × 106,110
  4. Step 4: Simplify right side
    74,430x = 11,259,332,100
  5. Step 5: Solve for x
    x = 11,259,332,100/74,430
  6. Step 6: Final answer
    x = 151,274.11

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.